winkler



C. WINKLER.

MACHINE FOR CASTING STEREOTYPE PLATES. APPLICATION r1150 APR. 5. 1915.

1,195,123. PatentedAug. 15,1916.

3 SHEETS-SHEET I.

ATTORNEYS C. WINKLER.

MACHINE FOR CASTING STEREOTYPE PLATES.

APPLICATION FILED APR. 5. 1915.

1,195,123. PatentedAug. 1916.

3 SHEETS SHEET 3.

Carl Winkler By W ATTORNEYS CARL WINKLEBI, OF BERNIE, SWITZERLAND.

MACHINE FOR CASTING STEREOTYPE-PLATES.

Specification of Letters Patent.

Patented Aug. 15, 1916.

Application filed April 5, i915. Serial No. 19,405.

T 0 all whom it may concern:

Be it known that I, CARL WINKLER, a citizen of the Swiss Republic, residing at Berne, in the Swiss Republic, have invented new and useful Improvements in Machines for Casting Stereotype-Plates, of which the following is a specification.

This invention relates to machines for casting stereotype plates, and it has for its object to cast suchplates quickly andwith- .out any superfluous appendix of cast metal,

so that the work and apparatushitherto requisite for removing said appendix are avoided.

The invention also has for its object to save molten metal and consequently to efi'ect an economy of fuel (to the extent of about 50 per cent.) and further, to enable plates to be cast at an essentially lower temperature than has hitherto been possible.

The principal feature of the invention is that in casting the plates the mold is brought into immediate connection with the crucible.

Another feature of the invention is that molds for both curved and flat plates can be brought into immediate connection wlth the same crucible.

The invention finally relates to an improvement in crucibles for machines of this kind, such improvement being characterized by a novel construction of the cock by which the connection between the crucible and mold is eflected.

The accompanying drawings illustrate the invention by way 0 example.

Figure 1 is a sectional elevation of a machine embodying the invention and shows the connection between the mold and the crucible. Fig. 2 is a similar view, this connection being interrupted, Fig. 3, a front elevation of the machine, partly in section; Fig. 4:, a sectional elevation of a machine having a mold for curved plates and a second mold for fiat plates, both combined with one crucible. Figs. 5, 6 and 7 show cross sections of a form of construction of the cock by which the connection between the crucible and mold maybe effected; Fig. 8 represents an appertaining longitudinal section.

In the arrangement shown in Figs. 1 to 3 a single mold is combined with the crucible. The furnace consists essentially of a shell 1,

crucible 2 disposed therein and having an elongated outlet 3 for the molten metal, and

of a base 5, which carries the shell 1, and, by means of supports 4, also the crucible 2; the base 5 carries the fire grate 6. To the base 5 another base 8 is fixed on which the mold and its adjuncts rest. The base 8 has two guides 9 for rollers 10, the mold being movable on these rollers toward and away from the furnace. The mold consists of the shell 11 and two cores 12. Each of the cores 12 is mounted in a support 13 by means of an arm 14 so as to be rotatable on a horizontal axis. The shell 11 and cores 12 have hollows 15 which serve for heating or cooling the mold. A shaft 16, provided with a hand lever 17, is connected at 20 with the base 5 by means of links 18 and a rod 19. This mechanism serves to move the mold toward the crucible, 2'. e. into the position for casting plates, or to move it away from the crucible, when a projection 11' of the mold will cover and close the outlet 3, as will be seen from Figs. 1 and 2. On the shaft 16 and a second shaft 21 hooks 22 are arranged which serve to retain the cores 12 in the position shown in Fig. 1, that is, to keep them inthe shell 11 by engaging rollers 26 with which the cores are fitted, as indicated in Fig. 1. These hooks are actuated by the following device: To the shell 1 a guide 23 for a roller 24 is fixed, this roller being attached to the adjacent hook 22. The hooks are connected with each other by toothed segments 22 and are keyed on the shaft 21, but are'loose on the shaft 16 so that they can rotate on the latter.

This machine is used in the following manner: The shell 11 and the cores 12 are heated to about 140 by vapor entering the hollow spaces 15 through pipes a, the object being to avoid the waste castings hitherto The machine is then in the condi-' usual.

tion represented in Fig. 2, the projection 11 of the mold covering the outlet 3 of the crucible and the cores 12 being elevated. The matrix is placed in a matrix holder of any well-known construction, and, with this device, is laid in the shell 11. It would also be admissible to arrange the matrix retaining device on the cores 12 and to lace the cores together with matrix an matrix holder into the shell 11. Thereafter the leam Gianni] while the hooks 22 engage the rollers 26 so as to retain the core 12 in the shell 11. When the opening 3 coincides with the opening 3 the molten metal in the crucible 2 enters the space 27 between the shell 11 and core 12. After this space has been -filled the hot vapor formerly admitted into move upward with the cast plate attached to it, which latter can now' be removed from the core. The matrix held by the matrix holder is separated from the cast plate on the latter moving upward and is returned into the shelLso that a number ofcastings can be immediately made from the same matrix. After the core has been moved upward with the castplate, the second corecan be immediately placed 'in the shell,

its circumference. When the plug 31 is in the position shown in Fig. 5 the molten metal flows through the chambers into' quantity of metal which replaces and serves every useful purpose of the appendix I hitherto obtained incasting plates. The,

. depth of the recess 32 is about equal to the thickness of the cast. plate, in order that the latter may solidify in a perfectly reliablev manner together with the metal in'the recess 32. At an appropriate moment of the,

solidifying. process the plug 31 is turned into the position show'njm Fig. 7, one edge of the recess 32 separating the molten metalcontained in the recess 32 from the cast plate; the metal thus cut oil is brought back into the crucible owing to the rotation of the plug, the recess 32 preliarably extending,

over the whole length or width of the cast plate. T lit isto be understood that the invention whereupon the mold can be again moved isnot restricted in scope to the forms of' into the position shown inFig. 1. The de-f construction llustrated and described, but scribed arrangement thus allows one core that modifications may be. made within the so that the molten .metal will enter the mold very rapidly. While casting the entire mass of molten metal contained in the crucible acts as a head to insure that as much metal will enter the mold as may be necessary to properly fill it, the pressure thus produced being considerably higher than with the usual devices. 7

The device shown in Fig. 4: is essentially the same as the one just described, but has a mold for flat plates besides the mold for curved plates with'which the arrangement according to Figs. 1 and 2 is provided.

The advantage due to this form of construc-' tion is that with one crucible both curved and flat plates canbe' simultaneously produced at a rate of working never attained before. The mold for flat plates consists of a part 11 and a second part 12 movable with regard to thelpart 11. Both the Hat mold and the curved mold 11, 12, which is scope, indicated by the appended claims,

without departing from the spirit or sacrificing' any of the advantages of this invention. For instance, instead of two cores, as

shown, only one may be used in any suit able arrangement adapted for the purpose.

What I claim and desire to secure by Let- Y ters Patent of the'United States is 1. A machine for casting stereotype plates, comprising in combination, a fixed crucible having a slot/shaped outlet, a mold comprising a shell and a core movable into and out ofthe shell, the mold havingan in let opening, a horizontal support on which the mold is mountedto slide, means for movmg the mold to and from the crucible, the

said outlet and inlet being caused to coinv cide, when the mold is moved toward the crucible, means for controlling the outlet of the crucible, and means for retaining and releasing the core and controlled by the movement of the mold.

2. A machine for casting -stereotype plates comprising in combination a crucible having a slot shaped outlet, a mold having an inlet opening, means for moving the mold 55 'on the other side of the crucible 2 and is .to and from the crucible, the said outlet and 1 20 already known from the arrangement dis-' v closed in Figs. 1 and'2, aremovablerela tively to the pot.

The outlet openings 3 of the pot 2 may be regulated by a cook 28. A cock particu larly adapted for the purpose of this invention is represented in Figs. 5 to 8. In the casing 29 of the cock there are chambers 30 which are in immediate connection with the crucible. The cock plug 31 has a recess 32 in inlet being caused to coincide when the mold I plates, comprising in combination a fixed crucible having a slot-shaped outlet, a mold including a shell a core movable into and out of the shell, ti id mold having an inlet opening adapted to coincide with said outlet, a support provided with rollers on 5 which the mold. is mounted to slide, means for moving the mold toward or from the crucible, the said outlet and inlet being caused to coincide with each other when the mold is moved toward the crucible, and means for retaining and releasing the core controlled by the movement of the mold toward and from the crucible.

4. in a machine for casting stereotype "plates, a crucible having a slot-shaped out- 15 let, a mold including a shell and a core movable into and out of the shell, the mold hav- 0 rollers on which the mold is supported, a lever mechanism for moving the mold. on said rollers toward and m crucible, the said outlet and inlet we, caused to coincide when the mold is moved towan the crucible, means for closthe said outlet when the mold is moved from the crucible, and means controlled by the movement of the mold toward and in an inlet opening,

leasing the core.

om crucible for retaining and re 5. In a machine for casting stereotype plates, a shell, a crucible disposed therein and having an elongated outlet for the molten metal, a base carrying said shell and supporting said crucible, a mold including a shell and a core movable into and out of the shell, the mold having an inlet opening, a base fixed to the first mentioned base and on which the said mold rests, means for moving the mold on said base toward and from the crucible, the said outlet and inlet being caused to coincide when the mold is moved toward the crucible, means for engaging the core when the mold is moved toward the crucible to keep the same in the shell, the said means being controlled by the movement of the mold, and means for controlling the communication between the crucible and the mold.

In testimony whereof I have signed my name to this specification in the nresence of two subscribing witnesses, u

CARL VIINKLER.

Witnesses 2 J. M. Bowcocx, M. BERTSOHINGER. 

